These reading eyeglasses block up to 90% of blue light, making them perfect for protecting your eyes from digital device screens and other forms of blue light exposure. The anti-reflective lenses are made from durable CR-39 material and are gender neutral with a unisex frame constructed from plastic and a HMC coating. CE certified and with a lens width of 5.3cm & lens height of 6.2cm, these glasses provide superior correction for farsightedness and arrive within 18-22 days.